P1103 – MAF Sensor Signal High (BMW)

Description

P1103 BMW indicates the MAF sensor signal is higher than expected.

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Symptoms

  • Hesitation
  • Reduced power
  • Rough idle

Causes

  • Sensor failure
  • Airflow restriction
  • Wiring fault

Diagnosis

  • Check MAF readings
  • Inspect intake
  • Check wiring

Repair

  • Replace MAF
  • Repair wiring
  • Fix intake restriction